[ 26.249030][ T260] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 26.263272][ T267] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 26.343550][ T259] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 31.954229][ T272] devlink (272) used greatest stack depth: 22544 bytes left [ 31.959188][ T262] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 57.655970][ T326] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 57.681148][ T324] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 57.800491][ T319] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 57.836017][ T322] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 62.330522][ T418] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 62.756298][ T419] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 62.956369][ T416] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 62.963314][ T417] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 63.371524][ T419] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 63.391792][ T418] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 63.410902][ T421] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 63.508882][ T416] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 64.742189][ T417] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 64.745034][ T421] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 64.773305][ T419] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 64.807175][ T418] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 69.633247][ T543] Failed to register fib notifier [ 70.135869][ T421] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 70.150268][ T416] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 70.171758][ T417] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 70.297054][ T418] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 84.172041][ T791] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 84.219851][ T792] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 84.240009][ T794] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2 [ 84.276448][ T795] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 94.822201][ T928] [ 94.822295][ T928] ====================================================== [ 94.822460][ T928] WARNING: possible circular locking dependency detected [ 94.822621][ T928] 6.12.0-rc5-virtme #1 Not tainted [ 94.822751][ T928] ------------------------------------------------------ [ 94.822914][ T928] modprobe/928 is trying to acquire lock: [ 94.823046][ T928] ffffffffc062d420 (&ops->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x21/0x2b0 [ 94.823288][ T928] [ 94.823288][ T928] but task is already holding lock: [ 94.823480][ T928] ffffffff8dbd3a88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 94.823716][ T928] [ 94.823716][ T928] which lock already depends on the new lock. [ 94.823716][ T928] [ 94.823967][ T928] [ 94.823967][ T928] the existing dependency chain (in reverse order) is: [ 94.824192][ T928] [ 94.824192][ T928] -> #1 (rtnl_mutex){+.+.}-{3:3}: [ 94.824391][ T928] __lock_acquire+0xb3f/0x1580 [ 94.824526][ T928] lock_acquire.part.0+0xeb/0x330 [ 94.824655][ T928] __mutex_lock+0x149/0xac0 [ 94.824787][ T928] rtnl_newlink+0x64b/0xa30 [ 94.824915][ T928] rtnetlink_rcv_msg+0x712/0xc10 [ 94.825046][ T928] netlink_rcv_skb+0x130/0x360 [ 94.825178][ T928] netlink_unicast+0x44b/0x710 [ 94.825308][ T928] netlink_sendmsg+0x723/0xbe0 [ 94.825440][ T928] ____sys_sendmsg+0x7ac/0xa10 [ 94.825572][ T928] ___sys_sendmsg+0xee/0x170 [ 94.825704][ T928] __sys_sendmsg+0xcd/0x170 [ 94.825835][ T928] do_syscall_64+0xc1/0x1d0 [ 94.825964][ T928] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.826127][ T928] [ 94.826127][ T928] -> #0 (&ops->srcu){.+.+}-{0:0}: [ 94.826324][ T928] check_prev_add+0x182/0xce0 [ 94.826457][ T928] validate_chain+0x71d/0x9b0 [ 94.826587][ T928] __lock_acquire+0xb3f/0x1580 [ 94.826718][ T928] lock_sync+0xd7/0x180 [ 94.826850][ T928] __synchronize_srcu+0x9e/0x2b0 [ 94.826980][ T928] __rtnl_link_unregister+0x14a/0x380 [ 94.827150][ T928] rtnl_link_unregister+0x14c/0x1c0 [ 94.827280][ T928] nsim_module_exit+0x10/0x1a [netdevsim] [ 94.827458][ T928] __do_sys_delete_module+0x2bd/0x470 [ 94.827620][ T928] do_syscall_64+0xc1/0x1d0 [ 94.827749][ T928] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.827909][ T928] [ 94.827909][ T928] other info that might help us debug this: [ 94.827909][ T928] [ 94.828158][ T928] Possible unsafe locking scenario: [ 94.828158][ T928] [ 94.828348][ T928] CPU0 CPU1 [ 94.828477][ T928] ---- ---- [ 94.828605][ T928] lock(rtnl_mutex); [ 94.828705][ T928] lock(&ops->srcu); [ 94.828863][ T928] lock(rtnl_mutex); [ 94.829024][ T928] sync(&ops->srcu); [ 94.829125][ T928] [ 94.829125][ T928] *** DEADLOCK *** [ 94.829125][ T928] [ 94.829348][ T928] 2 locks held by modprobe/928: [ 94.829484][ T928] #0: ffffffff8dbb8790 (pernet_ops_rwsem){++++}-{3:3}, at: rtnl_link_unregister+0xa6/0x1c0 [ 94.829761][ T928] #1: ffffffff8dbd3a88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 94.830000][ T928] [ 94.830000][ T928] stack backtrace: [ 94.830173][ T928] CPU: 1 UID: 0 PID: 928 Comm: modprobe Not tainted 6.12.0-rc5-virtme #1 [ 94.830377][ T928] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 94.830703][ T928] Call Trace: [ 94.830812][ T928] [ 94.830883][ T928] dump_stack_lvl+0x82/0xd0 [ 94.831028][ T928] print_circular_bug+0x2e2/0x4b0 [ 94.831165][ T928] check_noncircular+0x2f9/0x3e0 [ 94.831305][ T928] ? __pfx_check_noncircular+0x10/0x10 [ 94.831443][ T928] ? __kernel_text_address+0x12/0x40 [ 94.831594][ T928] ? unwind_get_return_address+0x5e/0xa0 [ 94.831732][ T928] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 94.831900][ T928] ? arch_stack_walk+0xa2/0xf0 [ 94.832035][ T928] check_prev_add+0x182/0xce0 [ 94.832168][ T928] ? __pfx_stack_trace_save+0x10/0x10 [ 94.832305][ T928] validate_chain+0x71d/0x9b0 [ 94.832459][ T928] ? __pfx_validate_chain+0x10/0x10 [ 94.832590][ T928] ? mark_lock+0x335/0x3e0 [ 94.832723][ T928] ? __pfx_validate_chain+0x10/0x10 [ 94.832853][ T928] __lock_acquire+0xb3f/0x1580 [ 94.832986][ T928] lock_sync+0xd7/0x180 [ 94.833097][ T928] ? __synchronize_srcu+0x21/0x2b0 [ 94.833232][ T928] __synchronize_srcu+0x9e/0x2b0 [ 94.833368][ T928] ? __pfx___synchronize_srcu+0x10/0x10 [ 94.833512][ T928] ? hlock_class+0x4e/0x130 [ 94.833643][ T928] ? mark_lock+0x38/0x3e0 [ 94.833741][ T928] ? kvm_clock_get_cycles+0x18/0x30 [ 94.833872][ T928] ? ktime_get_mono_fast_ns+0x84/0x360 [ 94.834004][ T928] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 94.834167][ T928] __rtnl_link_unregister+0x14a/0x380 [ 94.834296][ T928] ? mark_lock+0x38/0x3e0 [ 94.834396][ T928] ? __pfx___rtnl_link_unregister+0x10/0x10 [ 94.834557][ T928] ? mark_held_locks+0x9e/0xe0 [ 94.834688][ T928] rtnl_link_unregister+0x14c/0x1c0 [ 94.834821][ T928] ? __pfx_rtnl_link_unregister+0x10/0x10 [ 94.834954][ T928] ? __pfx_woken_wake_function+0x10/0x10 [ 94.835089][ T928] nsim_module_exit+0x10/0x1a [netdevsim] [ 94.835230][ T928] __do_sys_delete_module+0x2bd/0x470 [ 94.835358][ T928] ? __pfx___do_sys_delete_module+0x10/0x10 [ 94.835522][ T928] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 94.835685][ T928] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 94.835846][ T928] ? trace_rcu_segcb_stats+0x37/0x1e0 [ 94.835979][ T928] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 94.836161][ T928] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 94.836327][ T928] do_syscall_64+0xc1/0x1d0 [ 94.836458][ T928] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.836625][ T928] RIP: 0033:0x7f9c8fe3c5ab [ 94.836767][ T928] Code: 73 01 c3 48 8b 0d 55 98 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 25 98 1b 00 f7 d8 64 89 01 48 [ 94.837261][ T928] RSP: 002b:00007fffdbcd9bf8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 94.837471][ T928] RAX: ffffffffffffffda RBX: 000055a222d93980 RCX: 00007f9c8fe3c5ab [ 94.837667][ T928] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055a222d939e8 [ 94.837862][ T928] RBP: 000055a222d93980 R08: 0000000000000000 R09: 0000000000000000 [ 94.838057][ T928] R10: 00007f9c8ff9bac0 R11: 0000000000000206 R12: 000055a222d939e8 [ 94.838254][ T928] R13: 0000000000000000 R14: 000055a222d939e8 R15: 00007fffdbcdbf28 [ 94.838454][ T928]